What does it mean when the scriptures say that to think of Sai Baba as a 'mere human' is the mark of a 'dull intellect'?

According to Chapter 10, considering Sai Baba a 'mere human' is a sign of a 'dull intellect' because it fails to perceive His true nature. The text explains that Baba is the embodiment of the ultimate, formless reality, describing Him as that which is 'truly boundless and infinite, filling everything from Brahman to a blade of grass' and 'eternally one and indivisible.' He is presented as a 'mine of Self-knowledge' and the 'fullness of Bliss embodied.' Therefore, viewing Him as just a person is a profound misunderstanding that prevents one from achieving the spiritual attainment offered by recognizing the divine in His human form and crossing the 'ocean of existence.'